Restructure public side of gpu service.

mojo/services/public/interfaces/gpu/gpu.mojom

Index: mojo/services/public/interfaces/gpu/gpu.mojom
diff --git a/mojo/services/public/interfaces/gpu/gpu.mojom b/mojo/services/public/interfaces/gpu/gpu.mojom
deleted file mode 100644
index f3187e3706ec1bf6e4723756c253b49dc1302d0f..0000000000000000000000000000000000000000
--- a/mojo/services/public/interfaces/gpu/gpu.mojom
+++ /dev/null
@@ -1,17 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-module mojo;
-
-import "mojo/services/geometry/public/interfaces/geometry.mojom";
-import "mojo/services/public/interfaces/gpu/command_buffer.mojom";
-import "mojo/services/public/interfaces/gpu/viewport_parameter_listener.mojom";
-
-interface Gpu {
-  CreateOnscreenGLES2Context(uint64 native_viewport_id,
-                             Size? size,
-                             CommandBuffer&? gles2_client,
-                             ViewportParameterListener? listener);
-  CreateOffscreenGLES2Context(CommandBuffer&? gles2_client);
-};